Reversing mechanism.



F'. TSCHUDY.

REVERSING MEOHANISM. APPLICATION rILBD ooT. so. 1911.

Patented Sept. 29, 1914.

2 SHEETS-SHEET 1.

.i ii El@ "s F. TSCHUDY.

REVERSING MECHNISM.

APPLICATION FILED ocT. so, 1911.

2 SHEETS-SHEET 2.

1,1 12,101 I Patented sept.29,1914.

IHIIIIIIIIII FRED TscHUDY, oF BIRMINGHAM, ALABAMA. l

REVERSING MEGHANISM.

original application filed 'June 17, isiigseriai No. 633,848.

Specicaton of Letters Patent.

f Patented sept. 29, 1914. iiivided and this applicati@ filed october 3o,

To all whom it may concern: Be it known that I, FRED TsoHUDY, a citizen of the United States, and resident of Birmingham, county of Jefferson, and Statev means of which such furnaces may be easily and tion.

This application is a division of my applica-tion, Serial No. 633,848, filed June 17, 1911, entitled Coke producing plants.

In the operation of by-product coke ovens it is the custom to arrange a large number of such ovens in a battery, often as many as seventy ovens being combined into one coke-producing plant. These ovens are periodically reversed, the principle of operation being similar to that of a. regenerative quickly reversed, all in a single operafurnace, there being checker work which is alternately heated by the products of combustion and through which gas and air may pass on their Way to the burning chambers. Where such a large' number of ovens are arranged and adapted for reversal in unison, it becomes necessary to provide some means whereby such reversal may be carried out quickly and without unnecessary waste of power.

One of the principal objects of the present invention, therefore, is to provide an apparatus of such character which shall be simvple in construction, aswell as powerful and certain in operatic l My invention will be more readily understood by `reference to the accompanying drawings, wherein- Figure 1 is a plan View of apparatus such as contemplated by me; Fig. 2 is an end elevation thereof; and Fig. 3 is a side ele'- vation.

This mechanism is composed of the base portion 10, carrying bearings for a longitudinally extending worm shaft 11, and a transverse operating shaft 12. These shafts are adapted for rotation in unison by means of the bevel gears 13, 14. Movement 1s 1mparted to the shaft 12 by means 0f a motor 15, or other suitable means.

valves operable by means of the lMounted. on the worm shaft and adapted for reciprocation thereby, I provide a leveroperating member 16, having an air-valve operating projection 17, and recesses 18, 19. T his member 16 is adapted for reciprocation between guides 20, 21, mounted on the base 1 0. In order to provide againstvcontingencies due to failure of motive power, I provide hand operating meanssuch as the chain 22, and hand lever 23. Also mounted on the gaselO, bymeans of the pivot 24, is a rocker 5, having divergent projections 26, 27, with which the projection 17 is adapted to cooperate. Also mounted on the ,base by means oY pivots 28, 29, are lever arms 30, 31, connected respectively with gas valve operating chains 32, 33. These chains 32, 33, pass over drums 34, 35 slidably and independently mounted on the shaft 36, the chains terminating in the counter-weights 37, 38.

It will be seen that by this' reversing mechanism, the air' valves are reversed simultaneously by means of the rocker arm 25, and the chain or cable 39, but that the gas levers 30, 31, and chains 32, 33, are opera-ted intermittently. The reason for this will be understood in connection with the following description of operation Assuming the parts in the position shown in Fig. 1, 'and assuming that it is desired to reverse the furnace, the motor 15 is started and motion is transmitted to the screw threaded shaft 11.

This rotation causes the shifting of the' member 16 and immediately'thereafter the shiftin of the lever arm 30, which will shut o the gas supply from 'the right hand side ofthe'furnace. But it will be seen that air is still permitted to pass through the furnace'and out of the stack. However, as the worm continues to Shift the member 1G, the projection 17 will contact the end 27 of the rocker 25, and cause the reversal of the air currents in the furnaces; that is, the air valve on the right hand side of the furnace will be closed and the air valve on the left hand side opened. As the screw-threaded shaft continues to turn, tlierecess 18 will finally receive the lower end of the lever' 31, and in turn cause the supplying of gas to the left hand side of the furnace. The motor is then stopped and the normal operation of the furnace resumed until such time as it is necessary to again reverse the same, when the operations heretofore described Will be repeated in a reverse direction.

It is contemplated by me that the operation ofthe motor for causing the reversal of the furnaces shall be automatically caused by a master clock.

It Will be understood that although 'my novel apparatus is particularly adapted for use in connection with a by-product reversing coke oven, it may be used With any regenerative reversing furnace With slight' It Will be also understoodl diffev ,nt periods in the reciprocation thereof, substantially as described.

2. A reversing mechanism for furnaces, comprising, in combination, a base, a Worm shaft mounted in bearings on said base, means for rotating said Worm shaft, a member mounted on and adapted to. be recipro* cated by said Worm shaft, gas valve and airvalve-operating levers associated with said base, said levers being adapted for actuation by the said reciprocatory member, substantially as described.

3. A reversing mechanism for furnaces, comprising, in combination, a base, a Worm shaft mounted in bearings on said base, means for rotating said Worm shaft, a member mounted on and adapted to be reciprocated by said worm shaft, gas valve and airvalve-operating levers associated with said base, said levers being adapted for actuation by said reciprocatory member and at different stages in the reciprocation thereof, substantially as described. g

4. In a reversing mechanism for furnaces, the combination of a supporting member, a reciprocatory member mounted for movement on said supporting member, means for reciprocating said reciprocatory member, a plurality of levers associated with said mechanism and having portions adapted to be acted upon by said reciprocatory member at different points in its reciprocation, said levers being maintained by said recprocatory member against movement except by said reciprocatory member, substantially as described.

v FRED TSCHUDY. Witnesses:

E. l. BENFORD, H. E. DALBEY. 

